It's a wave packet with a spread, but the thing is, experiments with the two-slit mechanism provably show that while single photons end up at statistically random positions in the target plane, streams over time of single photons repeatably accumulate in wave patterns, and these patterns show that single photons pass through both slots and on the other side interfere with themselves.
In my old copy of Griffiths introductory book on QM, second edition figure 1-4 from a Hitachi CRL experiment clearly shows the single-photon behavior weirdness. The photons are not little hard balls, but they are single objects, where each object is a wave packet, which is a fuzzy little ball-ish thing.
It's a wave packet with a spread, but the thing is, experiments with the two-slit mechanism provably show that while single photons end up at statistically random positions in the target plane, streams over time of single photons repeatably accumulate in wave patterns, and these patterns show that single photons pass through both slots and on the other side interfere with themselves.
In my old copy of Griffiths introductory book on QM, second edition figure 1-4 from a Hitachi CRL experiment clearly shows the single-photon behavior weirdness. The photon are not little hard balls, but they are single objects, where each object is a wave packet, which is a fuzzy little ball-ish thing.
It's a wave packet with a spread, but the thing is, experiments with the two-slit mechanism provably show that while single photons end up at statistically random positions in the target plane, streams of time of single photons repeatably accumulate in wave patterns, and these patterns show that single photons pass through both slots and on the other side interfere with themselves.
In my old copy of Griffiths introductory book on QM, second edition figure 1-4 from a Hitachi CRL experiment clearly shows the single-photon behavior weirdness. The photon are not little hard balls, but they are single objects, where each object is a wave packet, which is a fuzzy little ball-ish thing.